AnyPlace.MainPage.my_locabtnclick C# (CSharp) Method

        private void my_locabtnclick(object sender, RoutedEventArgs e)
        {
            if (Mymap.Layers.Contains(_sourceLayer))
                Mymap.Layers.Remove(_sourceLayer);
            _externalSource = false;
            _sourcePoi = false;
            if (_routePoi != null)
            {
                if (_routePoi.pois != null)
                {
                    if (_routePoi.pois.Count > 0)
                    {
                        if (Mymap.Layers.Contains(indoorLayer))
                            Mymap.Layers.Remove(indoorLayer);
                        _routePoi.pois.Clear();
                        // clear directions
                        if (GetRoute.Count != 0)
                        {
                            GetRoute.Clear();
                            if (_myMapRoute != null)
                            {
                                routedetails_layer.Clear();
                                Mymap.RemoveRoute(_myMapRoute);
                                Mymap.Layers.Remove(routedetails_layer);
                                routeNavDetails.Clear();
                            }
                        }
                    }
                }

            }

            if (_floorPoiTo != null)
                if (Mymap.MapElements.Contains(_polyline))
                {
                    // if we are into the building and no source poi set get navigations route from location to poi
                    if (_tileLoaded && !_sourcePoi)
                    {
                        Mymap.MapElements.Clear();
                        GetNavigationRoutesBuilding(_selectedBuild, _floorPoiTo, _selectedFloor, _myLatitude.ToString(CultureInfo.InvariantCulture),
                            _myLongitude.ToString(CultureInfo.InvariantCulture));
                    }
                    else
                    {
                        // if we set source poi get navigations route from source poi else get all routes
                        if (_sourcePoi)
                            BuildingSourcePoi();
                        else
                        {
                            NavigateToFloorPoi();
                        }
                    }
                }

        }